Home / 815,424.11-1,222,596.29-389,025.74

Finding the Fourth Proportional to 815,424.11, 1,222,596.29 and 389,025.74

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Solution

The fourth proportional to 815,424.11, 1,222,596.29 and 389,025.74 is: 583,281.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,424.11 : 1,222,596.29 = 389,025.74 : x
  2. Step 2: Convert to fraction form
    815,424.11/1,222,596.29 = 389,025.74/x
  3. Step 3: Cross multiply
    815,424.11x = 1,222,596.29 × 389,025.74
  4. Step 4: Simplify right side
    815,424.11x = 475,621,418,380.39
  5. Step 5: Solve for x
    x = 475,621,418,380.39/815,424.11
  6. Step 6: Final answer
    x = 583,281.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.